Package VASSAL.command

Class NullCommand

java.lang.Object

VASSAL.command.Command

VASSAL.command.NullCommand

public class NullCommand
extends Command

Constructor Summary

Constructors

Constructor	Description
NullCommand()

Method Summary

Modifier and Type	Method	Description
protected void	executeCommand()	Perform the action which this Command represents
boolean	isNull()
protected Command	myUndoCommand()	If the action can be undone, return a Command that performs the inverse action.

Methods inherited from class VASSAL.command.Command

append, execute, getDetails, getSubCommands, getUndoCommand, hasNullSubcommands, isAtomic, isLoggable, isNullOrContainsOnly, stripSubCommands, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

NullCommand

public NullCommand()

Method Details

executeCommand

protected void executeCommand()

Description copied from class: Command

Perform the action which this Command represents

Specified by:

executeCommand in class Command

myUndoCommand

protected Command myUndoCommand()

Description copied from class: Command

If the action can be undone, return a Command that performs the inverse action. The Command returned should only undo Command.executeCommand(), not the actions of subcommands

Specified by:

myUndoCommand in class Command

isNull

public boolean isNull()

Overrides:

isNull in class Command

Returns:

true if this command does nothing